The first ever human case of this flesh-eating parasite infestation has been detected in the US. The Department of Health and Human Services (HHS) reported that the case of infestation by the New World screwworm (NWS) parasite was confirmed on August 4, involves a patient who had recently traveled back to the US from El Salvador. What is the New World Screwworm or Flesh-Eating Parasite? The New World screwworm myiasis is a parasitic infection caused by the larvae, or maggots, of a parasitic fly. These maggots are known for feeding on the living flesh of their hosts and are drawn to open wounds, where they lay their eggs. While they primarily infest livestock like cattle, they can also affect pets, wildlife, and, in rare instances, even people. Health officials, including the Centers for Disease Control and Prevention (CDC), have stated that the risk to the general public in the US remains very low. This devastating pest is usually found in parts of South America and the Caribbean. Despite efforts to stop its spread, the parasite has moved northward, with cases now confirmed in every Central American country, including Mexico.Also Read: Human Pig Lung Transplant: First-Ever Gene-Edited Pig Lung Transplanted Into a Brain-Dead Man Successfully What Is The First Symptoms of Flesh-Eating Screwworm In Humans? The CDC explains that the NWS infestations are extremely painful. The most obvious sign is seeing maggots in or around an open wound, or even in your nose, eyes, or mouth. Other symptoms can include: Sores or wounds that don't heal or get worse over time.Painful wounds that may bleed.A foul smell coming from the wound.A crawling sensation as you feel the maggots moving inside the wound.Sometimes, a fever or chills can occur if a bacterial infection develops.If you experience these symptoms after traveling to Central or South America or the Caribbean, it's important to tell your doctor about your recent trip. Who is at Risk For Flesh-Eating Screwworm Parasite? Your risk of getting an NWS infestation increases if you travel to areas where the flies are present and: You have an open wound, such as from a scratch, cut, insect bite, or recent surgery.You have a weakened immune system, perhaps from a medical condition like HIV, cancer treatment, or certain medications.You have a medical condition that causes open sores, like some skin or sinus cancers.You sleep outdoors.You live or work around livestock or other warm-blooded animals in these regions.How Does Flesh Eating Parasite Spread? An infestation starts when a female NWS fly lays her eggs in an open wound or body opening like the nose or mouth. The smell of a wound, even a small one like a tick bite, can attract the flies. A single female fly can lay 200–300 eggs at a time. Once the eggs hatch, the tiny maggots burrow into the living tissue to feed. After they've fed, they drop to the ground, burrow into the soil, and eventually turn into adult flies, starting the cycle over again. How Can You Prevent Flesh Eating Screwworm Infection? If you see or feel maggots in a wound or on your body, you should contact a healthcare provider right away. They will need to remove the larvae, which sometimes requires surgery. It is very important that you do not try to remove the maggots yourself. Prevention is the best way to avoid an infestation. Keep any open wounds clean and covered.Wear long-sleeved shirts, pants, and socks to protect your skin from bites.Use an EPA-approved insect repellent.Treat your clothing and gear with products that contain 0.5% permethrin.Sleep indoors or in rooms with screens.